In context of environment, the term “dirty dozen” refers to _____...? Mcqs

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In context of environment, the term “dirty dozen” refers to _____...?

(A) 12 most harmful greenhouse gases
(B) 12 ozone depleting substances

(C) 12 persistent organic pollutants
(D) None of the above

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Sound of frequency below 20 Hz is:___________...?

(A) Audiosonic
(B) Infrasonic

(C) Ultrasonic
(D) Supersonic

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Which one of the following forms weak electrolyte solution with water...?

(A) CH₃COOH
(B) H₂SO₄

(C) NaCl
(D) None of these

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GPS is an abbreviation for...?

(A) Global Poles System
(B) Global PolySiliconium Store

(C) Global Positioning System
(D) Global Position Structure

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Safe moisture content for the storage of cereals is...?

(A) 10%
(B) 14%

(C) 16%
(D) 17%

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SI unit of light is _________ ...?

(A) watt
(B) Pascal

(C) Candela
(D) Joule

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Disease causing microorganism are referred to an:...?

(A) Viruses
(B) Pathogens

(C) Coliform Bacteria
(D) All of these

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Virus is__________...?

(A) unicellular
(B) multicellular

(C) acellular
(D) none of these

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A tight-rope walker carries a long pole which he holds across his body. The purpose of this pole is to__________...?

(A) Prop him up if he falls
(B) Spread out his weight and reduce the pressure on the rope

(C) Add extra weight to keep the rope tightly stretched
(D) To keep the Center of gravity always above vertically above the rope

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Which of the following acid is used in Ink...?

(A) Valeric
(B) Acetic

(C) Formic
(D) Tannic

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